From bd702d2f007332dedcd4a1db0a7f21843ed537d7 Mon Sep 17 00:00:00 2001
From: Tobias Speicher <rootcommander@gmail.com>
Date: Thu, 17 Mar 2022 13:13:41 +0100
Subject: [PATCH] lint: remove deprecated String.prototype.substr

closes #459
---
 lib/types/json.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/types/json.js b/lib/types/json.js
index 2971dc14..9349cbd6 100644
--- a/lib/types/json.js
+++ b/lib/types/json.js
@@ -122,7 +122,7 @@ function json (options) {
 
     // assert charset per RFC 7159 sec 8.1
     var charset = getCharset(req) || 'utf-8'
-    if (charset.substr(0, 4) !== 'utf-') {
+    if (charset.slice(0, 4) !== 'utf-') {
       debug('invalid charset')
       next(createError(415, 'unsupported charset "' + charset.toUpperCase() + '"', {
         charset: charset,